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Finding the Fourth Proportional to 35,679.64, 49,232.88 and 20,571.12

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Solution

The fourth proportional to 35,679.64, 49,232.88 and 20,571.12 is: 28,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,679.64 : 49,232.88 = 20,571.12 : x
  2. Step 2: Convert to fraction form
    35,679.64/49,232.88 = 20,571.12/x
  3. Step 3: Cross multiply
    35,679.64x = 49,232.88 × 20,571.12
  4. Step 4: Simplify right side
    35,679.64x = 1,012,775,482.43
  5. Step 5: Solve for x
    x = 1,012,775,482.43/35,679.64
  6. Step 6: Final answer
    x = 28,385.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.